Jacquard embroidery-machine.



K. BGGART.

JAOQUARD EMBROIDERY MACHINE,

' APPLICATION FILED MAR. 14, 1913. 1,101,263. 1

Patented June 23, 1914.

2 SHEETSSHBET 1.

wwrqm K. EGGART. JAGQUARD EMBROIDERY MACHINE.

APPLICATION FILED MAR.14,1913. 1,101,263, Patented June 23, 1914.

2 SHEETSSHEET 2.

UNITED STATES PATENT curios.

KARL EGG-ART, 0F ARBON, SWITZERLAND, ASSIGNOR TO THE FIRM 0F ADOLPH SAURER, 0F ARBON, SWITZERLAND.

J ACQUARD EMBROIDERY-MACHINE.

Specification of Letters Patent.

Patented June 23, 1914.

Application filed larch 14, 1913. Serial No. 754,193.

appertains to make and use the same, refer-' ence being had to the accompanying drawings, and to letters or figures off-reference marked thereon, which form a part of this specification.

My invention relates to the devices employed in jacquard embroidery machlnes for temporarily influencing various parts of the. same by means of the so-called automatic or acquard mechanism. Such devices are used, for instance, for shifting the fork of the belt-by'which the embroidery machine and jacquard mechanism arev driven from the main driving means; and also for changing the stroke or extent of motion of tools, such as perforators, punches, thread guides, etc. The defect of prior devices of this nature has been that shocks received, for instance, by the perforators or the belt 'fork, are transmitted to the automatic mechanism, whereby the gearing is injured. Moreover, a grooved cam has usually been used, which owing to the shocks received by the device frequently turns backward and thus causes inaccurate work. These drawbacks are avoided by the present invention.

The invention is illustratedin the acco'npanying drawin s, parts of. the jacquard embroidery mac ine not necessary for a proper understanding of the present invention being omitted.

Figure 1 is a view-partly in elevation and partly in section of a portion of a machine equipped with the present improvement. Fig. 2 is a cross sectional view showing the perforator mechanism as viewed at right angles to the plane of Fig. 1. Fig. 3 is a plan view of the mechanism illustrated in Fig. 1. Fig. 4' is partly in elevation and part section, showing the stepped wheel and cooperating parts on a larger scale. Fig. '5 is a similar view of a modification to be hereinafter described. Fig. 6 is a view in elevation illustrating the application of the invention to belt shifting devices. Fig. 7 is a view in side elevation of parts of the 7 pairs, and all these jacquard mechanism and transmission gearlng shown in Fig. 6.

Referring more particularly to the construction shown in Figs. 14, A designates the jacquard mechanism, and S the embroidery machine, these two parts together constitutmg a so-called jacquard embroidery machine. From the automatic mechanism A there extends a shaft 27, which is turned through a certain angle one or more times, to the right or left, as determined by the perforations of the card. On this shaft 27- there is fixedly mounted a stepped wheel 47, consisting of a disk presenting steps 48, 48, 48", 48, etc., on both sides, the steps 48 and 48 lying parallel with each other, similarly the steps 48 and 48, and so on in parallel steps lying at right angles to the shaft 27. Between the various parallel steps 48, 48, etc.,there lie other parallel steps 49, 49, 49, 49, etc.,

which are located at an angle to the shaft 27 The stepped wheel 47 lies between and isengaged by two pins 50 projecting from a rod 51, which lies parallel to the shaft 27. One end of this rod 51 is pivoted to a lever 52, whose lower end is fulcrumed on a pin 53, while its top end has joined to it a block 54 which slidably engages in the slot 55 of a lever56, so asto constitute a movable fulcrum for this last named lever. To the one end of the lever 56 there is pivoted a rod 57, to which there is jointed bent lever gear 58 which engages with sleeves 59 rigidly secured to the rods 60, which support the bar 61 with the perforators 62. At the other end of the lever 56 there is pivoted one end of a lever, 63, whose opposite end is pivoted to the frame of the embroidery machine S. This lever 63 has a laterally projecting pin 64, which engages in a groove in a. disk 65, driven by the shaft 66.

It is obvious that on rotation of the shaft 66 the perforators 62 are moved to and fro, the block 54 serving as stationary fulcrum of the lever'56. If, then, through the jacquard card and automatic mechanism A the shaft 27 is caused to rotate to the right or left, the

stepped wheel 47 will be rotatedin corresponding direction through the distance of one or more steps, and the rod 51 accordingly pushed through the distance of one or more steps to the right or left. This will cause the block 54 to slide to the right or left, whereby the stroke of the rod 57 will be gear and the driving gear of the automatic altered, as shown in Fig. 4, where a: and 1;

indicate difl'e'rent lengths of stroke. In this manner the stroke of the perforators 62 can be altered likewise. When the wheel 47 is stationary, the pins 50 always lie against parallel steps, which areat right angles to the axis of the shaft 27. Thus shocks which,

for instance, the rod 57 receives in the direction of the arrow in Fig. 1, and the rod 51 receives in thedirection of the arrow in Fig. 4, will be taken up by the steps 48, 48, 48, etc., and transmitted to' the bearing of the shaft 27 in the casing G, so that the shocks will not reach the automatic mechanism A, which is thus preserved from in:

ury.

In the modification shown in Fig. 5, the disk 47 has a stepped groove 68 to receive apin 69 projecting from the lever 52. The walls of the groove 68 are stepped in similar manner to thesides of the disk 47 described above.

Figs. 6 and 7 show the manner in which such a device can be used to change the ratio of transmission between the main driving mechanism "A and the embroidery machine. In these figures 1 designates an electric motor, on theshaft of which there is mounted a cone pulley 2. 3 is another cone pulley, connected with the first by a belt'5. 4 is a belt pulley mounted fixedly on the shaft of the cone pulley 3 and from which the jacquard mechanism A and the embroidery machine are driven, that is to say, the pulley 4 drives a shaft (not shown in the drawing) which 1n its turn operates for instance the needles, shuttles, and the like. G is acasing "in which the stepped wheel 47, shownin Fig; 4, is mounted, and 51 is. the bar'which is moved to the right or left by the said wheel and to which the'fork 6 for the belt 5 is secured. The-shaft of the wheel 47 is rotated by a sprocket and chain drive 22 from a shaft 24 through a certain angle, one or more times, in one direction or the other, rotary motion being imparted to the shaft 24 by...

the automatic mechanism A in accordance with the perforation of the jacquard card.

I claim:

1. In combination, jacquard mechanism, a

' disk presenting pairs of parallel steps located at right angles to its axis, and other pairs of parallel steps located at an inclination to the axis'and connecting the successive pairs of the first named steps, means for transmitting rotary motion 'to thesaid disk from the jacquard mechanism, and means,

actuated by the stepped surfaces, connecting the disk with mechanism which is to be influenced;

2. In combination, jacquard mechanism, a

disk presenting pairs of parallel steps lo-. cated at right angles to the axis of the disk,

and other pairs of parallel steps located at an inclination to the disk-axis and connect ing the successive pairs of said firstnamed', steps, a lever fulcrumed toa stationary part 1 and having operative connection with said.

stepped disk, means for transmitting rotary motion to the said disk from the jacquard mcchanism and means connecting the said lever with mechanism-which to be influ -E enced.

v 3. In a jacquard embroidery machine, in

combination, actuating devices, jacquard; mechanism, a disk presenting pairs of parallelsteps located'at right angles to its axis and other pairs of parallel steps located at an inclination to the axis and connecting the successive pairs of said firstnamedflsteps, means for transmitting rotary motion; to the disk from the jacquard mechanism, and

means, actuated by the stepped" surfaces,-

connecting the disk with actuating devices of the embroidery machine.

4. In combination, jacquard-mechanism, a

disk presenting pairs-of parallel steps located at right angles'to its axis, and other pairs of parallel steps located at an inclination to the axis and connectingth'e succes sive pairs of the first named steps, means for transmitting rotary motion to said, disk from Emu; RICCARDO, RANDALL. ATKINSON. 

